APA

United States, . (1976). Federal and state efforts to control water pollution caused by acid drainage from mines. [Washington, D.C: .

Chicago

United States, . 1976. Federal and state efforts to control water pollution caused by acid drainage from mines. [Washington, D.C: .

Harvard

United States, . (1976). Federal and state efforts to control water pollution caused by acid drainage from mines. [Washington, D.C: .

MLA

United States, . Federal and state efforts to control water pollution caused by acid drainage from mines. [Washington, D.C: . 1976.